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26 Chapter 3 Electric Installation

Liebert.PEX Chilled Water Series Air Conditioner User Manual

Chapter 3 Electric Installation

This chapter introduces the electric installation of the chilled water AC, including the work introduction,
installation notes, wiring of the unit and installation inspection.

3.1 Work Introduction And Installation Notes

Wires to be connected on-site

1. Unit power cables.
2. Unit input and output control cables.

Installation notes

1. The connection of all power cables, control cables and ground cables must comply with local electrician
regulations;
2. See the equipment nameplate for the full load current. The cable sizes should meet the local wiring rules;
3. Mains supply requirement: 380Vac, 50Hz;
4. The electrical installation must be completed by trained personnel;
5. Before the wiring, use a multimeter to measure the power supply voltage and make sure that the power
supply has been switched off.

3.2 Wiring Of Chilled Water AC Unit

3.2.1 Locating Electrical Interfaces

Opening the front door of the chilled water AC unit can reveal the interfaces of electrical control box, as
shown in Figure 3-1, Figure 3-2 and Figure 3-3.

Control interface

N/PE terminal block

Power interface

Upflow

Power interface

Control interface

N/PE terminal block

Downflow

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Summary of Contents for Chilled Water Series

Page 1: ...Next Generation Critical Cooling for Room and Row Liebert PEX Efficiency And Reliability For High Availability Cooling Chilled Water Models User Manual ...

Page 2: ... contact the nearest Emerson local sales office or service center Copyright 2010 by Emerson Network Power Co Ltd All rights reserved The contents in this document are subject to change without notice Emerson Network Power Co Ltd Address No 1 Kefa Rd Science Industry Park Nanshan District 518057 Shenzhen China Homepage www emersonnetworkpower com cn E mail support emersonnetwork com cn ...

Page 3: ......

Page 4: ...cedures 15 2 4 Piping 19 2 5 Removing Transport Fastener And Vibration Absorber 21 2 6 Adjusting Water Level Regulator 24 2 7 Installation Inspection 25 Chapter 3 Electric Installation 26 3 1 Work Introduction And Installation Notes 26 3 2 Wiring Of Chilled Water AC Unit 26 3 2 1 Locating Electrical Interfaces 26 3 2 2 Connecting Power Cable Of Chilled Water AC Unit 27 3 2 3 Connecting Control Cab...

Page 5: ... SERVICE INFO 54 5 8 ADVANCED MENUS 54 5 8 1 PASSWORD LEVEL 54 5 8 2 FACTORY SETUP 55 5 9 MBV Settings 59 5 10 EVENT NAME AND DEFINITION 60 Chapter 6 Application Of INTELLISLOT 64 6 1 Introduction Of Host Communication Card 64 6 2 Installing Host Communication Card 65 6 3 Commissioning Host Communication Component 65 6 3 1 Setting HyperTerminal 66 6 3 2 Setting 485 Communication Card 67 6 3 3 Sett...

Page 6: ...midifier 76 7 5 Electrical Heater 78 7 6 Water Flow Control Valve 79 Chapter 8 Failure Diagnosis And Troubleshooting 80 Appendix 1 The Structure Chart Of Electric Control Box 83 Appendix 2 Circuit Diagram 86 Appendix 3 The Structure Chart Of Micro processing Controller Menu 87 ...

Page 7: ......

Page 8: ...er Model Nomenclature Product Range P PEX No Modules Bays Fans 1 2 3 One Two Three Nominal kW 20 30 40 to 150 Air Path F G U V D Downflow Forward Curve Downflow EC Backward Curve Upflow Forward Curve Upflow EC Backward Curve Upflow Ducted Forward Curve Cooling Type C Chilled Water Cooling Control 2 3 2 way CWV CW zero compressors 3 way CWV CW zero compressors Voltage M 400 3 50 iCOM Display S L Sm...

Page 9: ...onnected to the system pipes with live joints easy for field installation and maintenance thus reducing the project installation cost Micro processing controller The micro processing controller of the chilled water AC uses an LCD screen with blue backlight and 128 64 dots The user interface operation is simple The multi level password protection can effectively prevent illegal operation It also fe...

Page 10: ...e 1 2 for details Table 1 2 Storage environment requirement Item Requirement Storage environment Indoor clean no dust Ambient humidity 5 RH 85 RH non condensing Ambient temperature 20 C 54 C Storage time Total transportation and storage time should not exceed 6 months Otherwise the performance needs to be re evaluated ...

Page 11: ...rameters It is recommended to use a mechanical handbarrow such as an electric forklift when unpacking and moving the equipment to the place closest to the installation site Insert the tines of the forklift below the pallet as shown in Figure 2 1 Align the tines with the center of gravity to prevent the unit from falling over Figure 2 1 Fork direction Keep the obliquity within 75 105 during the mov...

Page 12: ...Removing side boards and top cover 2 Removing the pallet The chilled water AC is fixed onto the pallet with M10 70 screws as shown in Figure 2 5 You can use an M10 open end spanner a ratchet spanner or a sleeve to remove the fixing screws 底板固定 Pallet fixing screw M10 70 Figure 2 5 Fixing screw position of pallet 2 1 3 Inspection After receiving the product you should check it against the packing l...

Page 13: ...reserve the space for maintenance The engineering dimensions drawings provided by the manufacturer can serve as a reference 2 2 System Installation Arrangement 2 2 1 General Arrangement The general arrangement of the chilled water AC is shown in Figure 2 6 Chilled water inlet Chilled water outlet Blance valve or isolation valve Water filler Isolation valve Drain valve Hose interface Welding interf...

Page 14: ...ns of the chilled water AC are shown in Figure 2 7 Figure 2 8 Figure 2 9 and Table 2 1 8 7 4 853 1970 853 1970 874 381 66 470 853 1970 874 853 1970 874 Upflow unit forward fan Upflow unit backward fan 1970 8 7 4 853 853 1970 874 874 1970 853 280 320 853 1970 874 Downflow unit forward fan Downflow unit backward fan Figure 2 7 One bay series unit mm ...

Page 15: ...er Manual 1704 1970 874 1704 1970 874 381 66 233 470 470 345 1970 874 1704 1704 1970 874 Upflow unit forward fan Upflow unit backward fan 1704 1970 874 1704 1970 874 1704 1970 874 280 320 1704 1970 874 Downflow unit forward fan Downflow unit backward fan Figure 2 8 Two bay series unit mm ...

Page 16: ... fan 2553 874 1970 2553 1970 874 874 1970 2553 280 320 874 1970 2553 Downflow unit forward fan Downflow unit backward fan Figure 2 9 Three bay series unit mm Table 2 1 Dimension Model Dimensions W D H mm Net weight kg P1020 853 874 1970 315 P1030 853 874 1970 315 P1040 853 874 1970 338 P1050 853 874 1970 343 P2050 1704 874 1970 476 P2070 1704 874 1970 476 P2090 1704 874 1970 505 P2100 1704 874 197...

Page 17: ...supply plenum with grids for the upflow system The appearance of the plenum is shown in Figure 2 10 Figure 2 11 and Figure 2 12 The detailed dimensions are listed in Table 2 2 C B A Figure 2 10 One bay plenum C B A Figure 2 11 Two bay plenum C B A Figure 2 12 Three bay plenum Table 2 2 Dimensions of plenum unit mm Type A B C One bay 867 853 400 600 optional Two bay 867 1704 400 600 optional Three ...

Page 18: ... drain hole Chilled water inlet opening Water inlet opening for humidifier Cable inlet outlet opening 4 bottom plate fastening holes One bay series 74 9 130 1 55 70 40 146 4 50 78 3 45 120 45 45 120 50 60 70 45 159 6 Condensed water drain hole Chilled water drain hole Chilled water inlet opening Cable inlet outlet opening 4 bottom plate fastening holes Water inlet opening for humidifier Two bay se...

Page 19: ...0 471 96 8 120 45 50 45 88 5 130 45 70 Air supply outlet Air supply outlet Condensed water drain hole Chilled water inlet opening Chilled water drain hole Water inlet opening for humidifier Cable inlet outlet opening 4 bottom plate fastening holes Two bay series 120 45 29 471 318 471 420 350 48 48 5 105 65 90 70 88 5 45 471 56 8 119 45 72 5 45 130 45 45 70 72 5 50 Air supply outlet Condensed water...

Page 20: ... 84 70 58 89 601 4 bottom plate fastening holes Air supply outlet Air supply outlet Condensed water drain hole Chilled water inlet opening Chilled water drain hole Water inlet opening for humidifier Cable inlet outlet opening Two bay series 6 bottom plate fastening holes Condensed water drain hole Air supply outlet Air supply outlet Chilled water inlet opening Chilled water drain hole Water inlet ...

Page 21: ...are as follows 1 Damp proof and heat preservation must be done to make sure that the system can operate normally 2 The equipment room should have good heat insulation and sealed damp proof layer The damp proof layer of the ceiling and walls must use polyethylene film and the coating of the concrete wall and the floor must be damp proof 3 Prevent the outdoor air from entering the equipment room bec...

Page 22: ... Good place Unit Note The reserved maintenance space during the installation 600 600 600 Bad place Unit Figure 2 17 Installation place of indoor unit unit mm Maintenance space requirement Leave more than 600mm of maintenance space in the front and on both sides of the chilled water AC unit as shown in Figure 2 17 2 3 2 Installation Procedures The installation procedures of indoor unit are as follo...

Page 23: ...side of cabinet Steel plate Rubber cushion bottom Angle steel Rubber cushion top 4 Ф 14 cabinet installation hole Φ Upflow 730 1703 121 5 46 5 6 7 8 2 0 5 9 3 1610 1703 46 5 H Front side of cabinet Rear side of cabinet Installation hole for expansion bolt Rubber cushion lateral Steel plate Rubber cushion bottom Angle steel Rubber cushion top 4 Ф 14 cabinet installation hole Φ Downflow Figure 2 19 ...

Page 24: ...ushion lateral Steel plate Rubber cushion bottom Angle steel Rubber cushion top 8 Ф 14 cabinet installation hole Φ Upflow 6 7 730 121 5 6 8 0 5 161 5 6 7 8 2 0 530 46 5 760 1610 2553 5 9 3 8 2 0 46 5 H Rubber cushion top Front side of cabinet 8 Ф 14 cabinet installation hole Rear side of cabinet Installation hole for expansion bolt Rubber cushion lateral Steel plate Rubber cushion bottom Angle ste...

Page 25: ...on the top lateral of mounting base and on the bottom of the steel plate respectively See Figure 2 18 Figure 2 19 and Figure 2 20 for their positions and see Table 2 3 for the thickness 3 Determine the installation position Fix the mounting base onto the mounting base according to the site conditions and your requirement 4 Fix the AC unit onto the mounting base with nuts spring washers flat washer...

Page 26: ...oor 2 4 Piping The pipes to connect include 1 Water drain pipe of the unit 2 Water inlet pipe of infrared humidifier 3 Chilled water inlet and outlet pipes Connecting the water drain pipe of the unit The condensing water of infrared humidifier and evaporator is converged by the cross connector and drains through the drain pipe as shown in Figure 2 24 The outer diameter OD of the pipe is 25mm If th...

Page 27: ... Charge pipe Water tray Heating over temperature protection switch Water out connector Ceramic terminal base Overheat protective ralay Stainless steel double screw bolt Water tray fixing screw one at each side Water in pipe ODФ 6 35 mm Φ Figure 2 25 Infrared humidifier Connecting chilled water inlet and outlet pipes The chilled water inlet and outlet pipes are connected with the chilled water unit...

Page 28: ...rom being damaged and distorted due to bumping impact and resonation fasteners and vibration absorbers are mounted at certain locations before delivery Remove the fasteners and vibration absorbers before installation and commissioning Removing transport binding belt of front door To protect the front door from moving during transport tighten the gemel of the front door with binding string Before p...

Page 29: ...ing 2 Downflow unit During transportation to protect the semi free structure from falling or collapsing due to resonation the motor mounting plate is fixed on the bottom plate with connector by bolts as shown in Figure 2 29 You must remove the two connectors before the power on operation Sheet metal connector one at each side Figure 2 29 Transportation fan unit binding screw Note In any case never...

Page 30: ... Protection foam Protection foam Lamp Figure 2 31 Removing protection foam 2 2 Remove the four self tapping screws in the front cover plate of the infrared humidifier connection box and then remove the front cover plate as shown in Figure 2 32 Remove secf tapping screw 4 pcs Remove front cover plate of infrared humidifier connection box Remove self tapping screw 4 pcs Figure 2 32 Opening front cov...

Page 31: ... Before operating the unit remove the rubber string otherwise the unit cannot detect and alarm the high water level Rubber string Floating pole Figure 2 34 Floating pole of the high water level sense switch Remove the rubber string to fix the pipe To avoid the sheet metal from damaging the longer copper pipe the damping foam is used to underlay or clamp the pipe before it leaves the factory The fo...

Page 32: ...xed 3 The pipes connecting the indoor unit and outdoor unit have been connected 4 The condensate pump if needed has been installed 5 The drain pipe has been connected 6 The water supply pipe for infrared humidifier has been connected 7 All pipe joints have been fixed 8 The transport fasteners have been removed 9 The water level regulator of the infrared humidifier has been unscrewed to the require...

Page 33: ...ly with local electrician regulations 2 See the equipment nameplate for the full load current The cable sizes should meet the local wiring rules 3 Mains supply requirement 380Vac 50Hz 4 The electrical installation must be completed by trained personnel 5 Before the wiring use a multimeter to measure the power supply voltage and make sure that the power supply has been switched off 3 2 Wiring Of Ch...

Page 34: ...k Upflow Power interface Control interface N PE terminal block Downflow Figure 3 3 Electrical control box interfaces of three bay series 3 2 2 Connecting Power Cable Of Chilled Water AC Unit The power interfaces are located as shown in Figure 3 1 Figure 3 2 and Figure 3 3 and the power interface is amplified as shown in Figure 3 4 Connect terminals L1 L2 L3 N and PE to their counterparts of extern...

Page 35: ...23 5 3 2 3 Connecting Control Cables The control interfaces are located as shown in Figure 3 1 Figure 3 2 and Figure 3 3 The control interface is amplified in Figure 3 6 The upper part of the terminal block is connected to the AC unit while the lower part is used as user control signal interfaces Connecting with smoke sensor 91 is its common terminal Alarm output of smoke sensor Connecting with co...

Page 36: ...s 50 and 24 remote alarm optional Terminals 51 and 24 water sensor by default Terminals 55 and 24 safe switch for condensation water pump optional Water under floor sensor WUF Each unit is equipped with one WUF sensor You should connect one end of the sensor to terminal 51 and the other end to the common terminal 24 The number of sensors in parallel connection is not limited but there is only one ...

Page 37: ...ning This chapter introduces the start up commissioning of the chilled water AC including preparation before commissioning commissioning procedures and inspection after commissioning 4 1 Locating MCBs The MCBs are located as shown in Figure 4 1 Figure 4 2 and Figure 4 3 1 2 3 4 5 Upflow 1 2 3 4 5 Downflow Figure 4 1 MCBs of one bay series ...

Page 38: ...s Air Conditioner User Manual 1 2 3 4 5 Upflow 1 2 3 4 5 Downflow Figure 4 2 MCBs of two bay series 1 2 3 4 5 Upflow 1 2 3 4 5 Downflow Figure 4 3 MCBs of three bay series 1 Fan MCB 3 Infrared humidifier MCB 5 Main isolation switch 2 Electrical heater MCB 4 Control board MCB ...

Page 39: ...rrect In step two of 4 2 2 Commissioning Procedures you can use a straight screwdriver to click on the fan contactor within the electric control box to judge the phase sequence by observing the wind direction If the phase sequence is wrong exchange any two phases of the L line of the power supply 4 2 2 Commissioning Procedures 1 Turn off the MCBs of various parts Turn on the main MCB and control M...

Page 40: ...tion is normal 6 Change the humidity setting and the unit will enter a dehumidifying status Record the water flow quantity of the system and water resistance To trigger dehumidification you should Change the humidify setting see 5 7 SERVICE MENUS to 10 lower than the indoor relative humidity The control system should then trigger the call for dehumidification the water flow control valve switches ...

Page 41: ...ssed within a certain period of time settable default 5min the backlight will be off until the next time any button is pressed 5 2 Button And Indicator Panel Nine buttons and two indicators are located on the button and indicator panel including Indicators alarm indicator and operation indicator Buttons ON OFF button enter button ESC button up button down button left button right button alarm sile...

Page 42: ...croll a row or a screen down in the query state 3 Test the buzzer If the buzzer frequency is not 0 pressing the down button when the system is in the test state will decrease the buzzing frequency Meanwhile the buzzer will sound at the set frequency This function is used to test whether the buzzer is normal Left button 1 Select the left bit during the parameter setting operation 2 Test the LCD con...

Page 43: ...aphic interface see Figure 5 3 displays the percentage output chart of the function components while the simple interface see Figure 5 4 displays the icons of current operation mode only The switching of two modes can be realized by operating the menu For details refer to 5 6 7 DISPLAY SETUP The upper left corner of the main interface displays the current unit number the upper right corner display...

Page 44: ...2 SETPOINTS The setpoints will not be lost when the power fails You can enter to browse and set the parameters in the SETPOINTS submenu through the USER MENUS The left row displays the parameter codes the middle row the parameter name the right row the setpoints as shown in Table 5 4 Table 5 4 Descriptions of SETPOINTS parameters Parameters Default Setting range Description U102 TEMP SET 23 C 5 C ...

Page 45: ...38 Chapter 5 iCOM Controller Liebert PEX Chilled Water Series Air Conditioner User Manual 0 EVENT LOG P 01 1 31 2007 10 00 01 Warning Power loss Figure 5 6 EVENT LOG menu ...

Page 46: ...fferent time ranges See Table 5 5 for the detailed time range Table 5 5 Time range Time range Time indicated by each pixel Time range Time indicated by each pixel 8min 6s 2d 36min 32min 24s 4d 72min 1hr 45s 8d 144min 12hr 9min 16d 288min 24hr 18min The scaling of the vertical axis can also be set For the RETURN TEMP the scaling range is 3 20 for the RETURN HUMIDITY the scaling range is 10 30 The b...

Page 47: ...arameter Use the up or down button to change the setpoints and press the enter button to save the change or press the ESC button to quit the change 5 6 6 SENSOR DATA You can monitor the data acquired by the sensors through the SENSOR DATA menu The values are read only no setting or change is allowed The parameters are described in Table 5 7 Table 5 7 Descriptions of SENSOR DATA parameters Paramete...

Page 48: ...ert PEX Chilled Water Series Air Conditioner User Manual 5 6 7 DISPLAY SETUP The DISPLAY SETUP menu is used to set the LCD display attributes Password is not required for changing the setpoints The parameters are described in Table 5 8 ...

Page 49: ...lues of the temperature and humidity are displayed U410 DISPLAY Norm Norm normal Inv Display color U411 DATE m d y m d y d m y y m d Date display format 5 6 8 TOTAL RUN HRS The TOTAL RUN HRS menu records the total run time unit hr of the system components You can also set the run time limits of the system components through this menu If the actual component run time exceeds the set limit alarms wi...

Page 50: ...t parameter is used to set the hour of time and the second one is used to set the minute of time U607 START 2 0m U607 STOP 2 0hr Sleep mode end time 2 The first parameter is used to set the hour of time and the second one is used to set the minute of time U607 STOP 2 0m U609 TIME MOD Auto Auto Yes No Timing mode setting Range Auto during the system sleep time if high low temperature occurs the sys...

Page 51: ...tting range S109 2ND SETP 23 C 5 C 40 C S110 BACK TSP 23 C 5 C 40 C Backup temperature setpoint S111 HEAT DB 0K 0K 20K Heaters deadband setting range S113 HUM SET 50 1 80 Humidity setpoint S114 HUM CTRL Pred Comp Rel Pred Humidity control type S115 HUM PB 10 1 20 Humidity proportional band S116 HUM INT 5min Humidity integration time S117 HUM DB 0 1 50 Humidity deadband setting range S118 LO LIM 1 ...

Page 52: ...quency setting of the running and standby units Range Daily rotate once a day MON SUN rotate once a week The rotation occurs on Monday Sunday of the week For example MON means rotation occurs on Monday of every week M MON M SUN rotate once a month The rotation occurs on Monday Sunday of the first week of the month For example M MON means rotation occurs on Monday of the first week of every month S...

Page 53: ...1 Starts per day best S017 WORST 24 Starts per day worst S018 ALARMS 0 Number of alarms since the last maintenance S019 BONUS 0MM Bonus amount Actual bonus calculated through the number of starts and average run time This value determines the time for the next maintenance WELLNESS COMP1 Table 5 16 Descriptions of WELLNESS COMP1 parameters Parameters Default Description S024 STARTS Number of compre...

Page 54: ... of starts and average run time This value determines the time for the next maintenance WELLNESS HEAT2 Table 5 19 Descriptions of WELLNESS HEAT2 parameters Parameters Default Description S057 STARTS Number of electric heater 2 starts since the last maintenance S058 RUN HRS hr Electric heater 2 run hours since the last maintenance S059 AVG RUN min Average electric heater 2 run time calculated throu...

Page 55: ...set to 0 through the parameter S305 HT2 CNT 0 HT 2 alarm counting The counter can be reset to 0 through the parameter S306 LP1 CODE 0 LP 1 alarm counting The counter can be reset to 0 through the parameter S307 LP2 CODE 0 LP 2 alarm counting The counter can be reset to 0 through the parameter S308 LP1 ACT br Actual LP 1 S309 LP2 ACT br Actual LP 2 S310 LP1 ACT br Actual LP 1 S311 LP2 ACT br Actual...

Page 56: ...c output of analog variable 1 4 They can be set to be percentage of desired output S342 ANALOG2 0 0 100 S343 ANALOG3 0 0 100 S344 ANALOG4 0 0 100 Group 2 S345 RSD On On Off Remote shut down Range On Off S346 AIR LOSS OK OK ACT Air loss alarm OK means the system is normal ACT means the air loss is active and abnormity occurred S347 MOTOR OL ACT OK ACT Fan motor overload alarm OK means the fan is no...

Page 57: ...S224 CUST IN1 WATER S204 LO TEMP C S225 C1 ACT CLOSE S205 HI HUM 60 S226 CUST IN2 WATER S206 LOW HUM 40 S227 C2 ACT CLOSE S207 SENSOR A No S228 CUST IN3 WATER S208 HI TEMP A C S229 C3 ACT CLOSE S209 LO TEMP A C S230 CUST IN4 HEAT A S210 HI HUM A S231 C4 ACT OPEN S211 LO HUM A S232 WA AC AL No S213 SUP SNSR No S233 WAT OFF No S214 HI SUP T 24 C CUST IN1 CUST IN2 CUST IN3 and CUST IN4 can be set to ...

Page 58: ...S268 STB Standby unit on S239 HRT High room temp S269 HUP Humidifier problem S240 LRT Low room temp S270 NOC No connection w Unit1 S241 HRH High room hum S271 No connection w UnitX S242 LRH Low room hum S272 LOP LOSS OF POWER S243 HTA High temperature of sensor A S275 CI1 Customized input 1 S244 LTA Low temperature of sensor A S276 CI2 Customized input 2 S245 HHA High humidity of sensor A S277 CI3...

Page 59: ...to change the setting value 0 1K at each step S609 CAL DS2 25 C Sum of the calibrated value and return air humidity measured by digital scroll 2NTC sensor This value is engaged in the calculation S610 OUT SNS C Outdoor Sensor S611 CAL OUT 0 0K Calibrated Outdoor Sensor S613 TEMP A 0 0K Calibrated value of temperature sensor A S614 CAL A C Calculated value corresponding to temperature sensor A S615...

Page 60: ...ess S838 GW 2 0 S838 GW 3 0 S838 GW 4 0 S840 U2U PROT GBP S841 U2U ADD 3 Group address No of this unit S842 U2U GRP 1 S843 BL CTRL No S R No Boot program variant load Saving the change of S835 S841 needs the S R command of this parameter The system will reset after the saving and configure according to the new parameters S843 BL STAT Change Change Valid Indication of whether or not the parameters ...

Page 61: ...flush enabled S419 DEHUM EN Yes Yes No Dehumidification enabled S420 REST EN Yes Yes No Auto restart enabled S421 RESTART s Unit auto restart time S422 ONOFF EN Yes Yes No On off key enabled If no is selected the ON OFF key cannot be used to perform on off operation on the machine S424 CW FLUSH 0hr Cooling water auto flush time unit hr hour S425 FC FLUSH 0hr Free cooling auto flush time unit hr ho...

Page 62: ...8 are changed but not saved Updating parameters are updating A010 EL CTRL Load External data can be loaded through the load command A011 EL STAT OK Not available Invalid OK Changed Updating Exception list status Range Not available parameters set through UC01 UC18 are unavailable Invalid parameters set through UC01 UC18 are invalid OK parameters set through UC01 UC18 are effective Changed paramete...

Page 63: ...ime of airflow loss Other settings Table 5 31 Descriptions of other settings Parameters 3 9 Default Setting range Description A113 DS CYCLE s Digital scroll cycle A114 DS HT C Digital scroll high temperature A115 DS SWB C Digital scroll switchback A116 LP TYPE Analog Analog Digital Low pressure device type A117 LP PH1 ps Low pressure threshold phase 1 A118 LP PH2 ps Low pressure threshold phase 2 ...

Page 64: ...5 K11 ACT DEH WNG DEH NOP FC A136 C W F DUR 3min 1min 3min Cooling water flush duration A137 COOL TYP SINGL Singl FC DC Three cooling type A138 STOP FC C Stop FC at setpoint or value A139 FC F DUR 0min 1min 3min Freecooling flush duration A140 FC F K11 Yes Yes No Freecooling flush starts R5 A141 COMP FC No Yes No Compressor plus FC simultaneously A142 HW F DUR 3min 0 3min Hot water flush duration ...

Page 65: ...otorized ball vavle1 CW210 CW FC 2V 10V MBV2 Motorized ball vavle 2 C2010 CW2 0 10V SCR Silicon controlled rectifier C2175 CW2 1 75 CONF Configurable C2210 CW2 2 10V ALBD1 AlarmBoard 1 Analog action related settings Table 5 37 Descriptions of analog action related settings Parameters 8 9 Default Setting range Description A168 AO1 STA 0 0 100 Analog output 1 start percentage A168 AO1 STA 0V 0V 10V ...

Page 66: ... only A186 LL2 ACT br HPT2 actual value read only 5 9 MBV Settings Through the ADVANCED MENUS screen see Figure 5 11 you can view the current status of the cooled valve MBV menu is displayed in six pages and the description of the menus is listed in Table 5 39 ADVANCED MENUS MBV SETTINGS SET MBV ACCESS settings of the motorized ball valve to change level to open requested menu ESC to unselect to n...

Page 67: ...nd definition Table 5 40 List of event name and definition Event Definition General Alarm General Alarm COMP 1 HIGH PRESSURE Compressor 1 high pressure COMP 1 LOW PRESSURE Compressor 1 low pressure HIGH CW TEMP Chilled water high temperature LOSS OF CW FLOW Loss of chilled water EL HEAT HIGH TEMP Electric heater high temperature MAIN FAN OVERLOAD Main fan overload LOSS OF AIRFLOW Loss of air flow ...

Page 68: ...ressor 1 overload COMP 2 OVERLOAD Compressor 2 overload WRONG DAMPER POSITION Wrong damper position Dummy 074 Dummy alarm 074 HP 1 SENSOR FAIL High pressuresensor 1 fails HP 2 SENSOR FAIL High pressure sensor 2 fails COMP POWER REDUCTION ACTIVE Compressor power reduction active NO POWER No power UNIT DISABLED Humidification heating disabled due to unit failure UNIT SHUT DOWN Unit shutdown due to f...

Page 69: ...REJ VFD HUMIDIFIER LOCKOUT Humidifier lockout HEAT REJ TVSS HEAT REJ TVSS COMPRESSOR S LOCKOUT Compressor lockout AMBIENT SENSOR FAIL Ambient sensor fail HUMIDIFIER LOW AMPS Humidifier low current COMP 1 SHORT CYCLE Compressor 1 short cycle COMP 2 SHORT CYCLE Compressor 2 short cycle HUMIDIFIER HIGH AMPS Humidifier high current HUMIDIFIER LOW WATER Humidifier low water level SYSTEM OFF REQUESTED S...

Page 70: ... sensor failure RETURN REF SENSOR FAILURE Return refrigerant sensor failure VALVE HRS EXCEEDED Valve has exceeded operating time limit COMP 1A HIGH PRESSURE Compressor 1A high pressure COMP 1B HIGH PRESSURE Compressor 1B high pressure COMP 2A HIGH PRESSURE Compressor 2A high pressure COMP 2B HIGH PRESSURE Compressor 2B high pressure COMP 1A HRS EXCEEDED Compressor 1A has exceeded operating time li...

Page 71: ...Communication Card The chilled water series air conditioner supports two communication cards below 1 TCP IP communication card The TCP IP communication card is shown in Figure 6 1 This card can provide network port MIB library and browse the data through IE 调试口网口 Console port Network port Figure 6 1 TCP IP communication card 2 485 communication card The 485 communication card is shown in Figure 6...

Page 72: ...matic figure of the host communication configuration is shown in Figure 6 4 P61 P65 and P67 cables have been connected in factory So you should only connect the communication card to the monitoring center Intellislot 485 or TCP IP communication card P65 P61 P67 iCOM control board Standard diplay screen Communication cable Monitoring center Figure 6 4 Electrical schematic figure of host communicati...

Page 73: ...on card and then set the parameters using the HyperTerminal of Windows The detailed setting procedures are as follows 1 Click Start Programs Accessories Communications HyperTerminal the HyperTerminal interface will pop up as shown in Figure 6 5 Type the name tt in the Name field and then click the OK button Figure 6 5 Typing the name 2 In the Connect To dialog box choose the serial port being used...

Page 74: ...HyperTerminal click the OK button the following interface will appear 2 Type 1 and the interface shown in the following figure will appear 3 Type 1 and the interface shown in the following figure will appear 4 Type 1 and select Modbus protocol the interface shown in the following figure will appear 5 Type 3 and select the ID used to communicate between the communication card and the host the inter...

Page 75: ...button to exit and return the main interface If you type x the setting can be saved After saving the 485 communication card will be restarted 10 On the main interface type 4 and you can check whether the communication status between the communication card and the chilled water series air conditioner is normal as shown in the following figure 6 3 3 Setting TCP IP Communication Card Set the paramete...

Page 76: ... to Static If the user network can distribute the address automatically select DHCP and the IP address netmask and gateway do not need to be set Type 3 4 and 5 and then type the corresponding IP address netmask and gateway respectively These three parameters should be given by the user 4 Press Esc button to exit and return to the main interface as shown in the following figure If you type x the se...

Page 77: ...nication Card After the HyperTerminal of the TCP IP communication card is set you can set the parameters for this communication card See the following for details 1 Type the IP address of the TCP IP communication card in the address bar of IE browser If the interface shown in Figure 6 8 appears it indicates that the communication between the communication card and the iCOM controller is abnormal I...

Page 78: ...er Series Air Conditioner User Manual After normal communication the interface shown in Figure 6 9 will appear Figure 6 9 Initial interface 2 2 Click the configure tab to enter the configuration interface as shown in Figure 6 10 Figure 6 10 Configuration interface ...

Page 79: ...ure 6 11 Typing user name and password 4 Configure the Network Management System NMS of the host monitoring center in Figure 6 12 Click the Edit button and type the IP address of the NMS in IP Address Select the read or write in Access type Public in Community and then click the Save button Note 1 Before setting the NMS the Edit button is displayed in the interface After editing the configuration ...

Page 80: ...ation card SNMP protocol is shown in Figure 6 14 The air conditioner number is not limited HUB AC 1 TCP IP card AC 2 TCP IP card AC n TCP IP card Network cable connection Monitoring center Network cable connection Network cable connection Network cable connection Figure 6 14 Networking figure of TCP IP communication card Note The single unit does not need HUB The networking figure of the 485 commu...

Page 81: ...he contactors can act freely without obstruction 3 Clean the electric and control components of dust with brush or dry compressed air 4 Check the closing of contactors for arcs or signs of burning Replace the contactor if necessary 5 Fasten all the electric connection terminals 6 Check that the sockets and plugs are in good condition Replace those loosened ones Control maintenance Carry out visual...

Page 82: ...hown in Figure 7 1 Drain pipes on the ground Liebert system Location of leak detection sensor Location of leak detection sensor Figure 7 1 Recommended location for the water leak detector Note 1 Before connecting any mechanical parts or cables make sure the power supply of the control unit has been disconnected 2 Do not use the water leak detector adjacent to flammable liquid or use it to detect f...

Page 83: ...etails please contact the manufacturer 7 3 1 Fan Bearing And Blades Check the fan regularly to make sure the bearing is firmly fixed Rotate the blades and make sure that they do not scratch the wall of the air duct Because the bearing is permanently sealed and self lubricated check for signs of wearing when adjusting the belt Roll the belt and observe the motion of the fan bearing If any abnormal ...

Page 84: ...he burned lamp 5 Remove the humidifier water pan 6 Remove the brackets in the middle that support the lamps Infrared lamp Ceramic socket Lamp supporting bracket Fixing screw of ceramic socket Fixing screw of wires Lamp supporting bracket Figure 7 3 Lamps of infrared humidifier 7 Remove the screws that fix the cables of the lamp to be replaced from the ceramic sockets note to hold the lamp with han...

Page 85: ... will periodically flush the water pan to prevent the accumulation of sediments because of erosion effect Because of the difference of water supply in different regions the water flowing past the system shall be set with program to match the local needs The selectable water quantity is 110 to 500 of the water flow rate The autoflush system will operate automatically after water quantity is selecte...

Page 86: ...s Figure 7 6 right and actuator Actuator Regulator body Actuator Connector Regulator body Figure 7 6 Water flow control valve Adjusting method The water flow control valve automatically adjusts the valve position according to the refrigeration requirement so as to make sure the temperature and humidity of the AC room are within the control range When the refrigeration requirement is big the valve ...

Page 87: ...tor Control panel failure Examine whether there is 24V AC voltage between P36 3 and E1 If there is not then the control panel has failures Please check whether the green LED beside silicon control Q5 on the control panel is on or not Control panel failure For backward EC fan Examine whether there is 10V DC voltage between P53 2 and P53 3 If there is not then the control panel has failures Fuse pan...

Page 88: ...e Heating system safety equipment disconnection For secondary electric heating inspection of P34 6 and P34 7 terminals should be made If heating system begins to operate it means that the safety equipment is disconnected Then you should remove the jumper and replace the safety equipment Contactor pull on no heating effect Heater burnout Cut off the power and detect the resistance characteristics o...

Page 89: ...For backward EC fan ___ 6 Whether blades scratch the adjacent metal plate For backward EC fan Chilled water coil ___ 1 Clean water pipe system ___ 2 Check whether there is leakage in water system Heating system ___ 1 Examine the operation of re heating system components ___ 2 Check the component corrosion status ___ 3 Check and fasten the circuit connector Infrared humidifier ___ 1 Check whether t...

Page 90: ...ioner User Manual Appendix 1 The Structure Chart Of Electric Control Box 6 5 4 3 2 1 14 16 8 10 11 13 17 18 7 A 9 12 15 19 20 21 A amplified view Upflow 6 5 4 3 2 1 7 8 10 13 15 9 11 14 17 18 12 16 A 19 20 21 A amplified view Downflow Figure 1 Internal structure of one bay series electrical control box ...

Page 91: ...lled Water Series Air Conditioner User Manual 5 4 3 2 1 16 A 1214 17 18 11 10 9 8 6 7 13 15 19 20 21 A amplified view Upflow 5 4 3 2 1 16 A 1214 17 18 11 10 9 8 6 13 15 7 20 21 A amplified view 19 Downflow Figure 2 Internal structure of two bay series electrical control box ...

Page 92: ...re of three bay series electrical control box 1 Fan MCB 6 Fuse board 11 N PE terminal 16 Fan contactor 2 Bus 7 Control board 12 Backup reheat relay 17 Fan overcurrent protector 3 Electrical heater MCB 8 Control terminal 13 Isolation transformer 18 Main isolation switch 4 Infrared humidifier MCB 9 Ground current detector 14 Humidification contactor 19 Temperature humidit y sensor board 5 Control bo...

Page 93: ...IFICATION TRIAC Q5 MAIN FAN TRIAC Q6 HUMIDIFIER MAKE UP TRIAC TH TEMPERATURE SENSOR T1 UNIT CONTROL TRANSFORMER RH2 REHEAT STAGE 2 CONTACTOR T2 ISOLATION TRANSFORMER U1 U30 OPTO ISOLATORS R3 EXTRACOMMON ALARM 24V HMV HUMIDIFIER MAKE UP VALVE HS3 MANUAL RESET HUMIDIFIER HWA HIGH WATER ALARM RAD REMOTE ALARM DEVICE SAFETY UNDER PAN RSD REMOTE SHUTDOWN DEVICE SD SMOKE DETECTOR ECON O CYCLE K11 ECON O...

Page 94: ...Lo Te S U 314 Lo Temp U315 Hi Hu H U315 Hi Humi U316 Lo Hu H U 313 Hi Te H U 316 Lo Hu M U316 Lo Hu S U316 Lo Humi U402 YEAR U402 MONTH U402 DAY U403 HOUR U403 MINUTE U403 SECOND U404 TEMP F C U405 CONTRAST U406 BUZ FREQ U406 BUZ TEST U401 LANGUAGE U407 BACKLITE U408 SCREEN U409 SHOWS U410 DISPLAY U411 DATE U502 LIMIT U503 COMP1 U503 LIMIT U504 COMP2 U504 LIMIT U505 CW FC U505 LIMIT U506 HG HW U50...

Page 95: ...S S079 STARTS S080 RUN HRS S081 AVG RUN S082 BEST S083 WORST S084 ALARMS S085 BONUS S130 S131 VPULS S832 NW STAT S835 MON PROT S836 IP 1 S836 IP 2 S832 NW CTRL S831 CS STAT S836 S837 NM 2 S837 NM 3 S837 NM 4 S838 GW 1 S837 NM 1 S836 IP 4 IP 3 S838 GW 4 S840 U2U PROT S841 U2U ADD S842 U2U GRP S838 GW 3 S838 GW 2 S843 BL CTRL S844 SR STAT S844 SR CTRL S843 BL STAT S425 FC FLUSH S426 HW FLUSH S427 BA...

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